+<?php
+/**
+ * An ActiveTask visitor
+ *
+ * @author Roland Haeder <webmaster@shipsimu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.shipsimu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class ActiveTaskVisitor extends BaseVisitor implements TaskVisitor, PoolVisitor, ListenerVisitor, DecoratorVisitor {
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+
+ // Set visitor mode
+ $this->setVisitorMode('task');
+ }
+
+ /**
+ * Creates an instance of this class
+ *
+ * @return $visitorInstance An instance a Visitorable class
+ */
+ public static final function createActiveTaskVisitor () {
+ // Get new instance
+ $visitorInstance = new ActiveTaskVisitor();
+
+ // Return the prepared instance
+ return $visitorInstance;
+ }
+
+ /**
+ * Visits the given task instance
+ *
+ * @param $taskInstance A Taskable instance
+ * @return void
+ */
+ public function visitTask (Taskable $taskInstance) {
+ // Execute the task from this visitor
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('[' . __METHOD__ . ':' . __LINE__ . ' ]: Visiting task ' . $taskInstance->__toString() . ' - CALLED!');
+ $taskInstance->executeTask();
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('[' . __METHOD__ . ':' . __LINE__ . ' ]: Visiting task ' . $taskInstance->__toString() . ' - EXIT!');
+ }
+
+ /**
+ * Pool visitor method for active tasks
+ *
+ * @param $poolInstance A Poolable instance
+ * @return void
+ */
+ public function visitPool (Poolable $poolInstance) {
+ /**
+ * We don't need to visit a pool as an active task because a pool can
+ * never become a task. Instead e.g. by a listener pool we should visit
+ * all listeners one by one
+ */
+ }
+
+ /**
+ * Visits the given listener instance
+ *
+ * @param $listenerInstance A Listenable instance
+ * @return void
+ */
+ public function visitListener (Listenable $listenerInstance) {
+ // Do "listen" here
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('[' . __METHOD__ . ':' . __LINE__ . ' ]: Visiting ' . $listenerInstance->__toString() . ' - CALLED!');
+ $listenerInstance->doListen();
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('[' . __METHOD__ . ':' . __LINE__ . ' ]: Visiting ' . $listenerInstance->__toString() . ' - FINISH');
+ }
+
+ /**
+ * Visits the given decorator instance
+ *
+ * @param $decoratorInstance A decorator instance
+ * @return void
+ */
+ public function visitDecorator (BaseDecorator $decoratorInstance) {
+ // A decorator itself can never become an active task so this method
+ // remains empty.
+ }
+}
+
+// [EOF]
+?>